package com.flash.controller.user;

import com.flash.constant.StatusConstant;
import com.flash.entity.Dish;
import com.flash.result.Result;
import com.flash.service.DishService;
import com.flash.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;
    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        //构造redis_key
        String redisKey = "dish_" + categoryId;
        //根据分类查询数据
        //检查Redis里面是否存储有数据
        List<DishVO>list = (List) redisTemplate.opsForValue().get(redisKey);
        //如果有那么将Redis中的数据返回
        if (list != null && !list.isEmpty()){


            return Result.success(list);
        }

        //如果没有，进行数据库查询，并将查询结果加入缓存
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品

        list = dishService.listWithFlavor(dish);

        redisTemplate.opsForValue().set(redisKey,list);

        return Result.success(list);
    }


}
